ISO 10896-7:2016

Overview

ISO 10896-7:2016 specifies safety, design and verification requirements for longitudinal load moment systems used on rough‑terrain trucks. It covers both the longitudinal load moment indicator (LLMI) - a device that warns the operator - and the longitudinal load moment control (LLMC) - a device that prevents motions that would increase longitudinal load moment beyond allowable limits. The standard applies to trucks in a stationary position performing loading or placing functions on consolidated, stable and level ground. It excludes lorry‑mounted trucks and slewing variable‑reach trucks and is not intended to address lateral instability or overturning risks during travel.

Key topics and technical requirements

• Scope & definitions: Clarifies longitudinal load moment, LLMI and LLMC and the load‑handling geometry used for calculations.
• Design considerations: Systems must account for operating environment (temperature, humidity, dust), truck rated capacity, EMC, maintenance, shock and vibration.
• Calibration protection: Adjustments affecting calibration must be restricted to authorized personnel (special tools, keys or sequences).
• Verification & testing: Functional checks must be possible without special tools; periodic verification procedures must be provided in the operator manual.
• Warning behavior (LLMI):
  • Continuous visible and audible warnings starting at predetermined limits (based on stability test T1 of ISO 22915‑14).
  • Progressive warnings to give the operator time to react; distinct signals for approach vs. limit reached.
  • Operator must not be able to cancel warnings.
• Control behavior (LLMC):
  • Prevents operator actions that would increase longitudinal load moment beyond allowable limits; must maintain or return to a safe condition on power failure or voltage recovery.
• Electrical & installation:
  • Power supply protection against voltage variation, reversal, overload, short circuit and earth faults.
  • Inter-unit signals and power must be protected against interference (no use of chassis for signal return).
  • Externally mounted components exposed to harsh conditions require a minimum protection rating of IP67 (per IEC 60529).
• Malfunction indication: Any system malfunction must be clearly indicated to the operator (continuous lamp or buzzer).

Applications and practical value

• Use ISO 10896‑7:2016 when designing, integrating or verifying LLMI/LLMC systems for rough‑terrain trucks to improve onsite safety during stationary lifting/placing operations.
• Useful for manufacturers of rough‑terrain trucks, control‑system integrators, safety engineers, test labs and maintenance teams to define design specs, operator manuals, periodic test procedures and acceptance criteria.
• Benefits include reduced risk of forward tipping during stationary lifting, clearer operator warnings, robust calibration control and consistent verification practices.

Who should use this standard

• Truck manufacturers and OEMs
• Control-system designers and integrators
• Safety and compliance engineers
• Test laboratories and certification bodies
• Fleet owners and maintenance organizations

Related standards

• ISO 10896‑1:2012 (variable‑reach trucks)
• ISO 10896‑2 (slewing variable‑reach trucks) - excluded scope
• ISO 22915‑14 (stability verification, test T1)
• ISO 12100 (machine safety, risk assessment)
• ISO 13849‑1 (safety‑related control systems)
• IEC 60529 (IP code for enclosures)